CVE-2022-40617
Published: 3 October 2022
strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
strongswan Launchpad, Ubuntu, Debian |
kinetic |
Released
(5.9.6-1ubuntu2)
|
| upstream |
Needs triage
|
|
| bionic |
Released
(5.6.2-1ubuntu2.9)
|
|
| focal |
Released
(5.8.2-1ubuntu3.5)
|
|
| jammy |
Released
(5.9.5-2ubuntu2.1)
|
|
| trusty |
Released
(5.1.2-0ubuntu2.11+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| xenial |
Released
(5.3.5-1ubuntu3.8+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| lunar |
Released
(5.9.6-1ubuntu2)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |